src/echo/intx.c File Reference

#include "echo.h"
#include "privateEcho.h"

Include dependency graph for intx.c:

Defines
#define	TRI_INTX(ray, origin, edge0, edge1, pvec, qvec, tvec,det, t, u, v, COND, NOPE)
Functions
int	_echoRayIntx_Noop (RAYINTX_ARGS(Object))
int	_echoRayIntx_CubeSurf (echoPos_t *tP, int *axP, int *dirP, echoPos_t xmin, echoPos_t xmax, echoPos_t ymin, echoPos_t ymax, echoPos_t zmin, echoPos_t zmax, echoRay *ray)
int	_echoRayIntx_CubeSolid (echoPos_t *tminP, echoPos_t *tmaxP, echoPos_t xmin, echoPos_t xmax, echoPos_t ymin, echoPos_t ymax, echoPos_t zmin, echoPos_t zmax, echoRay *ray)
int	_echoRayIntx_Sphere (RAYINTX_ARGS(Sphere))
void	_echoRayIntxUV_Sphere (echoIntx *intx)
int	_echoRayIntx_Cylinder (RAYINTX_ARGS(Cylinder))
int	_echoRayIntx_Cube (RAYINTX_ARGS(Cube))
void	_echoRayIntxUV_Cube (echoIntx *intx)
int	_echoRayIntx_Rectangle (RAYINTX_ARGS(Rectangle))
int	_echoRayIntx_Triangle (RAYINTX_ARGS(Triangle))
int	_echoRayIntx_TriMesh (RAYINTX_ARGS(TriMesh))
void	_echoRayIntxUV_TriMesh (echoIntx *intx)
int	_echoRayIntx_AABBox (RAYINTX_ARGS(AABBox))
int	_echoRayIntx_Split (RAYINTX_ARGS(Split))
int	_echoRayIntx_List (RAYINTX_ARGS(List))
int	_echoRayIntx_Instance (RAYINTX_ARGS(Instance))
void	_echoRayIntxUV_Noop (echoIntx *intx)
int	echoRayIntx (echoIntx *intx, echoRay *ray, echoScene *scene, echoRTParm *parm, echoThreadState *tstate)
Variables
int	_echoVerbose = 0
_echoRayIntx_t	_echoRayIntx [ECHO_TYPE_NUM]
_echoRayIntxUV_t	_echoRayIntxUV [ECHO_TYPE_NUM]

---

Define Documentation

#define TRI_INTX	(	ray,
		origin,
		edge0,
		edge1,
		pvec,
		qvec,
		tvec,
		det,
		t,
		u,
		v,
		COND,
		NOPE		)

Value:

ELL_3V_CROSS(pvec, ray->dir, edge1);                                       \
  det = ELL_3V_DOT(pvec, edge0);                                             \
  if (det > -ECHO_EPSILON && det < ECHO_EPSILON) {                           \
    NOPE;                                                                    \
  }                                                                          \
  /* now det is the reciprocal of the determinant */                         \
  det = 1.0/det;                                                             \
  ELL_3V_SUB(tvec, ray->from, origin);                                       \
  u = det * ELL_3V_DOT(pvec, tvec);                                          \
  if (u < 0.0 || u > 1.0) {                                                  \
    NOPE;                                                                    \
  }                                                                          \
  ELL_3V_CROSS(qvec, tvec, edge0);                                           \
  v = det * ELL_3V_DOT(qvec, ray->dir);                                      \
  if (COND) {                                                                \
    NOPE;                                                                    \
  }                                                                          \
  t = det * ELL_3V_DOT(qvec, edge1);                                         \
  if (t < ray->neer || t > ray->faar) {                                      \
    NOPE;                                                                    \
  }

---

Function Documentation

int _echoRayIntx_AABBox

(

RAYINTX_ARGS(AABBox)

)

int _echoRayIntx_Cube

(

RAYINTX_ARGS(Cube)

)

int _echoRayIntx_CubeSolid	(	echoPos_t *	tminP,
		echoPos_t *	tmaxP,
		echoPos_t	xmin,
		echoPos_t	xmax,
		echoPos_t	ymin,
		echoPos_t	ymax,
		echoPos_t	zmin,
		echoPos_t	zmax,
		echoRay *	ray
	)

int _echoRayIntx_CubeSurf	(	echoPos_t *	tP,
		int *	axP,
		int *	dirP,
		echoPos_t	xmin,
		echoPos_t	xmax,
		echoPos_t	ymin,
		echoPos_t	ymax,
		echoPos_t	zmin,
		echoPos_t	zmax,
		echoRay *	ray
	)

int _echoRayIntx_Cylinder

(

RAYINTX_ARGS(Cylinder)

)

int _echoRayIntx_Instance

(

RAYINTX_ARGS(Instance)

)

int _echoRayIntx_List

(

RAYINTX_ARGS(List)

)

int _echoRayIntx_Noop

(

RAYINTX_ARGS(Object)

)

int _echoRayIntx_Rectangle

(

RAYINTX_ARGS(Rectangle)

)

int _echoRayIntx_Sphere

(

RAYINTX_ARGS(Sphere)

)

int _echoRayIntx_Split

(

RAYINTX_ARGS(Split)

)

int _echoRayIntx_Triangle

(

RAYINTX_ARGS(Triangle)

)

int _echoRayIntx_TriMesh

(

RAYINTX_ARGS(TriMesh)

)

void _echoRayIntxUV_Cube

(

echoIntx *

intx

)

void _echoRayIntxUV_Noop

(

echoIntx *

intx

)

void _echoRayIntxUV_Sphere

(

echoIntx *

intx

)

void _echoRayIntxUV_TriMesh

(

echoIntx *

intx

)

int echoRayIntx	(	echoIntx *	intx,
		echoRay *	ray,
		echoScene *	scene,
		echoRTParm *	parm,
		echoThreadState *	tstate
	)

---

Variable Documentation

_echoRayIntx_t _echoRayIntx[ECHO_TYPE_NUM]

Initial value:

 {
  (_echoRayIntx_t)_echoRayIntx_Sphere,
  (_echoRayIntx_t)_echoRayIntx_Cylinder,
  (_echoRayIntx_t)_echoRayIntx_Superquad,
  (_echoRayIntx_t)_echoRayIntx_Cube,
  (_echoRayIntx_t)_echoRayIntx_Triangle,
  (_echoRayIntx_t)_echoRayIntx_Rectangle,
  (_echoRayIntx_t)_echoRayIntx_TriMesh,
  (_echoRayIntx_t)_echoRayIntx_Noop,
  (_echoRayIntx_t)_echoRayIntx_AABBox,
  (_echoRayIntx_t)_echoRayIntx_Split,
  (_echoRayIntx_t)_echoRayIntx_List,
  (_echoRayIntx_t)_echoRayIntx_Instance,
}

_echoRayIntxUV_t _echoRayIntxUV[ECHO_TYPE_NUM]

Initial value:

 {
  _echoRayIntxUV_Sphere,  
  _echoRayIntxUV_Noop,    
  _echoRayIntxUV_Noop,      
  _echoRayIntxUV_Cube,    
  _echoRayIntxUV_Noop,    
  _echoRayIntxUV_Noop,    
  _echoRayIntxUV_TriMesh, 
  _echoRayIntxUV_Noop,    
  _echoRayIntxUV_Noop,    
  _echoRayIntxUV_Noop,    
  _echoRayIntxUV_Noop,    
  _echoRayIntxUV_Noop     
}

int _echoVerbose = 0